WSD and Bonjour service block

[Patrick M. Hausen]

Without mDND repeater or UDP broadcast relay a multicast packet cannot cross interfaces. Even with "permit all" it cannot. You have something weird about your wiring.

Please provide a diagram of your network.

[fox983]

I've tried on a fresh install on different hardware, same problem.
WAN - LAN - VLAN5
VLAN5 with only one rule that blocks all traffic to LAN
Printer discovered by WSD on Win10.
Can someone explain why this happens?

[Patrick M. Hausen]

VLAN5 on the same physical interface as LAN? LAN untagged? Don't mix tagged and untagged on the same port.

If not, please provide a diagram if your network. OPNsense, switch, clients, ...

[fox983]

In Interfaces - Other types - VLAN5 I've set LAN as Parent interface and 5 as VLAN tag. Next I've set a static IP in the newly created interface VLAN5 in Interface Assignments. And lastly there is the LAN-block rule.
Connected at this port there is a trunk port of a managed switch. It has a 802.1Q VLAN configuration with some ports PVID1 and others PVID5 and another one set to trunk connected to an access point multi SSID.
What is wrong in this configuration?